ATGBICS 537963-B21 compatible 10GBase-CU SFP+ to SFP+ direct attach cable operates over passive copper with a cable length of 5m. It is suitable for short reach connection between two SFP+ ports in 10G interconnecting networking applications. Our product is built to the exact specification of HPE 537963-B21= and we proudly offer a compatibility guarantee and lifetime warranty. Our rigorously tested products record a unique traceable serial number and are fully compliant with all MSA Standards and protocols including; 1x InfiniBand QDR, DDR, SDR, 10G Gigabit Ethernet, Fibre Channel, MSA SPF+ SFF-8431, SFF-8432, and SFF-8472 compliant.